usb: mtu3: support ip-sleep wakeup for MT8183

Add support ip-sleep wakeup for MT8183, it's similar to MT8173,
and it's also a specific one, but not following IPM rule.
Due to the index 2 already used by many DTS, it's better to keep
it unchanged for backward compatibility, treat specific ones without
following IPM rule as revision 1.x, meanwhile reserve 3~10 for later
revision that follows the IPM rule.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1616482975-17841-10-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c
index 41a5675ac5caabd97aecf0238682a4ab7862ecbd..a746bebc93e9522ac8b37ba6705cb03132dbc454 100644 (file)
--- a/drivers/usb/mtu3/mtu3_host.c
+++ b/drivers/usb/mtu3/mtu3_host.c
@@ -24,6 +24,12 @@
 #define WC1_IS_EN      BIT(25)
 #define WC1_IS_P       BIT(6)  /* polarity for ip sleep */
 
+/* mt8183 */
+#define PERI_WK_CTRL0  0x0
+#define WC0_IS_C(x)    ((u32)(((x) & 0xf) << 28))  /* cycle debounce */
+#define WC0_IS_P       BIT(12) /* polarity */
+#define WC0_IS_EN      BIT(6)
+
 /* mt2712 etc */
 #define PERI_SSUSB_SPM_CTRL    0x0
 #define SSC_IP_SLEEP_EN        BIT(4)
@@ -32,6 +38,7 @@
 enum ssusb_uwk_vers {
        SSUSB_UWK_V1 = 1,
        SSUSB_UWK_V2,
+       SSUSB_UWK_V1_1 = 101,   /* specific revision 1.01 */
 };
 
 /*
@@ -48,6 +55,11 @@ static void ssusb_wakeup_ip_sleep_set(struct ssusb_mtk *ssusb, bool enable)
                msk = WC1_IS_EN | WC1_IS_C(0xf) | WC1_IS_P;
                val = enable ? (WC1_IS_EN | WC1_IS_C(0x8)) : 0;
                break;
+       case SSUSB_UWK_V1_1:
+               reg = ssusb->uwk_reg_base + PERI_WK_CTRL0;
+               msk = WC0_IS_EN | WC0_IS_C(0xf) | WC0_IS_P;
+               val = enable ? (WC0_IS_EN | WC0_IS_C(0x8)) : 0;
+               break;
        case SSUSB_UWK_V2:
                reg = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
                msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;